Debt Instruments at Amortized Cost - Summary of Debt Instruments at Amortized Cost (Detail) - PHP (₱) ₱ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [Line Items]
Investment in debt securities and other long-term investments	₱ 607	₱ 1,153
Less: Current portion of debt instrument at amortized cost (Note 28)	207
Noncurrent portion of debt instrument at amortized cost (Note 28)	400	1,153
Retail Treasury Bonds [Member]
Disclosure of detailed information about financial instruments [Line Items]
Investment in debt securities and other long-term investments	400
Two Year Time Deposit [Member]
Disclosure of detailed information about financial instruments [Line Items]
Investment in debt securities and other long-term investments	₱ 207	₱ 1,153

The amount of current investments.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
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-URIDate 2021-03-24

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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The amount of investments other than investments accounted for using the equity method. [Refer: Investments accounted for using equity method]

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The amount of non-current investments other than investments accounted for using the equity method. [Refer: Investments accounted for using equity method; Non-current assets; Investments other than investments accounted for using equity method]

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